/Engine/Source/Runtime/MeshDescription/Public/MeshDescriptionBase.h
Returns the edge ID defined by the two given vertex IDs, if there is one; otherwise INDEX_NONE
[FEdgeID](API\Runtime\MeshDescription\FEdgeID) GetVertexPairEdge ( [FVertexID](API\Runtime\MeshDescription\FVertexID) VertexID0, [FVertexID](API\Runtime\MeshDescription\FVertexID) VertexID1 ) const